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A cache information value of 800000 means that the content was retrieved from the Internet, but that the content is cacheable and that the response included the Last-Modified header A destination Internet Protocol (IP) that is the actual IP address of the server on the Internet also indicates that the page was retrieved from the Internet A value of 40840000 indicates that this content should not be cached because it contains the Cache-Control: No-Cache header or the Pragma: No-Cache header A value of a00000 indicates that this content should be cached but it has a time limit defined 25 Switch to the Performance Console Notice that ISA Server has cached several URLs 26 In ISA Server Management, click Start Query 27 On CLIENT1, open Internet Explorer and access http://wwwmicrosoftcom 28 Close Internet Explorer 29 On ISA1, click Stop Query 30.

Calling a Web Method Synchronously . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Statistics on table or view columns play an important role in optimizing query performance; the SQL Server query optimizer uses these statistics to evaluate the cost of using an index to satisfy a query. When you create an index, the query optimizer automatically stores statistical i n f o r m a t i o n a b o u t t h e i n d e x e d c o l u m n s . Yo u c a n a l s o s e t t h e AUTO_CREATE_STATISTICS database option to ON to have the database engine automatically create statistics on columns that are not contained in indexes but that are used in query predicates and to automatically update statistical information periodically as the data in the tables changes. Alternatively, you can manually create and update statistics by using TransactSQL statements and stored procedures.

Review information in the Cache Information and Destination IP columns for each of the Tailspin Toys URLs A cache information value of 0 means that the content was retrieved from the ISA Server cache A destination IP of 0000 also indicates that the page was retrieved from the ISA Server cache..

After data has been retrieved from the database, you can apply filters to the information that will be presented to the user. Filtering data is not the same as using parameters in the dataset; you will learn more about query parameters in 11. Filtering occurs after data

You can use this structure to represent items that repeat over a fixed range, such as degrees of rotation or quarters of a football game, as shown here:

CustomerName varchar(50) NOT NULL UNIQUE NONCLUSTERED,

tinyint decimal(p,s)

3. Click Appearance and Themes. (Note that if Control Panel is configured to show the Category view, you must click Switch To Classic View before performing this step.) 4. Click Folder Options. 5. In the Folder Options dialog box, on the General tab, in the Tasks section, select Use Windows Classic Folders. 6. In the Browse Folders section, select Open Each Folder In The Same Window. 7. In the Click Items As Follows section, select Single-Click To Open An Item (Point To Select). 8. On the View tab, in the Advanced Settings list, under Files And Folders, clear the Hide Extensions For Known File Types check box. 9. In the Advanced Settings list, under Hidden Files And Folders, select Show Hidden Files And Folders. Click OK. 10. In Control Panel, select Folder Options, and on the General tab, click Restore Defaults. On the View tab, click Restore Defaults. Click OK.

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Lesson Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50

1 . What is the purpose of a data source view (DSv) 2. Within a DSv, why are primary key and table relationship definitions important 3. If you have multiple tables that contain information related to a single dimension, how would you simplify the representation of that information within your DSv